The correlation between cardio stress and visual skills - Mthembu, N.; Terblanche, H.C.; Mahomed, A.F.; Henning, E.; Kleynhans, M.; Govender, Catherine; Grant, Rina; Wood, Paola; du Toit, Peet (Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / South African Journal of Science and Technology, 2012)